Moisture causes wood to expand.
How to nail ends of cottage lap siding.
We resided several larger houses with cedar lap.
From the top edge and no closer than 3 8 in.
Cottage lap sidings require 2 nails per board on studs 16 in.
Repeat until you reach the end of the row.
My inspection showed that a majority of the nails were much closer to the top edge and many were overdriven.
Fasteners shall be installed between 1 in.
I ve looked through older discussion and my questions have not been addressed yet.
Cottage lap and channel rustic sidings require 3 nails per board on all studs 16 in.
Repeat until wall is complete.
If two boards meet at the same stud place the first piece halfway onto the stud and nail.
James hardie prefers and recommends installation of hardieplank lap siding by the blind nailing technique such that fasteners are hidden by the course above.
Pin backs pinning the plank down at the bottom edge is a common practice called pin back it is used to correct high nailing loose planks gaps or rattling.
Cut and place boards to stagger cut ends from row to row.
For blind nailing the esr specifies that fasteners must be placed a minimum of 1 inch down from the top edge of the board and a minimum of 3 8 inch from the ends.
The reason siding becomes warped is because the ends of the wood boards were placed too close to each other when they were installed.
When the ends of the boards expand against each other they warp.
I worked for a couple of contractor in the portland or and vancouver wa area.
Place nails 5 8 in.
Never nail from the ends of the siding.
Make sure to prime and paint all exposed cut edges.
Cut to fit if necessary.
You might be able to repair some minor warping with nails and screws but this does not really address the problem.
Regarding nail placement on lap siding.
Start the next piece on the same stud.
From the ends of the plank.
We used 8 siding with 6 reveal.
Structural framing a minimum of 1 1 2 inches 38 mm.
Both contractors had me blind nail the siding.